The RTL8188CU is built on the IEEE 802.11n standard, which was designed to improve network throughput over previous 802.11a/b/g standards. USB 2.0 (backward compatible with USB 1.1). Frequency Band: 2.4 GHz (does not support 5 GHz).
If the device appears as a CD-ROM, you must install usb_modeswitch to switch it into WiFi mode. realtek rtl8188cu wireless lan 80211n usb 20 network adapter